# -*- coding: utf-8 -*-

# Copyright (c) 2011, Sergey Karakovskiy, Nikolay Sohryakov
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * Neither the name of Yasker nor the
#       names of its contributors may be used to endorse or promote products
#       derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

__author__ = 'Nikolay Sohryakov, Sergey Karakovskiy'
__copyright__ = 'Copyright 2011, Yasker'
__license__ = 'New BSD'
__email__ = 'Nikolay.Sohryakov+yasker@gmail.com, Sergey.Karakovskiy+yasker@gmail.com'

from google.appengine.ext import db
from app.anyjson import simplejson
import logging


class Events(db.Model):
	user = db.StringProperty()
	events = db.ListProperty(db.Text)


def add_event(user, update):
	usr_upd = Events.get_or_insert(user, user=user, updates=[])
	usr_upd.events.append(db.Text(update))
	usr_upd.put()


def get_next_event(user):
	logging.info('key=%s' % user)
	usr_upd = Events.get_by_key_name(key_names=user)
	if usr_upd is not None:
		result = usr_upd.events[0]
	else:
		result = simplejson.dumps([])
	return result


def clear_top_event(user):
	usr_upd = Events.get_by_key_name(key_names=user)
	if usr_upd is not None:
		usr_upd.events = usr_upd.events[1:]
		usr_upd.put()
